If the egg sinks but floats at an angle or stands on end, the egg is a bit older (a week to two weeks old) but still okay to eat. The "float test" is a quick and easy way to see if those eggs in your refrigerator are still safe to use in recipes. (If you are looking for more of a cut-and-dry test, dissolve 2 tablespoons of salt in 2 cups of cold water. To complete the egg float test, just gently insert your egg into the water. It is simple to do and only takes 5 minutes to check a carton of eggs. There's only one sure way to tell if an egg that floats is spoiled, and that's to crack it open in a bowl. Of course, if any eggs float to the top, they shouldn't be eaten. Eggs that float to the top are often considered spoiled because more air has seeped in through the shell and decomposition may have started. When I did the float test, they floated. If you want to try the egg float test using a mason jar, make it easy on yourself, and use a wide-mouthed jar so you can get the egg out easier. Start by filling a bowl with enough cold water to cover the egg plus two inches. The eggs to … A cup of water works well, too. A float test will remove the bloom and leave the eggs susceptible to bacteria penetration if left at room temperature. If the egg floats to the top, and bobs along the … How to Do the Egg Float Test. The egg float test is the easiest method you can use to determine if it’s is safe to eat. Shake It. An egg can float in water when its air cell is sufficiently large enough to keep the egg buoyant. This means the egg is old, but it may be perfectly safe to use. So the older the egg, the more air can penetrate its shell, causing it to float. I was just wondering because you said you grabbed them from the fridge like that's not something you normally do. The egg float test is an old fashioned way of telling approximately how old your eggs are. Soon after an egg is laid, it naturally cools, creating a small air space as its contents contract. Crack the egg into a bowl and examine it for an off-odor or unusable appearance before deciding to use or discard it. The air cell is found at the larger end of the egg between the inner and outer membranes. Decomposition, or spoiling, produces sulfur gas, the cause of the "rotten egg" smell. 2. (Psst: Grandma loves this trick!) Hi, I stored some eggs in the fridge. If the egg floats, it's too old and should be discarded. When you buy your eggs at the grocery store, you can be certain they’re fresh—or at least, fresh enough to use. An egg can float in water when its air cell has enlarged sufficiently to keep it buoyant. The science behind this is based on the fact that eggshells are semipermeable, which means air can get through. 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